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Effect of the northward turning of the interplanetary magnetic field on the depolarization
Z. Peng; C. Wang; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJournal of Geophysical Research: Space Physics
2013
Volume118Issue:12Pages:7605-7610
ISSN2169-9402
Language英语
KeywordNorthward Turning Of Imf Dipolarization Substorm
AbstractAn outstanding question in magnetospheric physics is whether the association between the northward turning of the interplanetary magnetic field (IMF) and the substorm onset is a random relation or a causal relation. In this work, we investigate the effect of the northward turning of the IMF on the dipolarization in the magnetotail by using the global PPMLR-MHD simulation model and observations. Four simulation runs are carried out: (1) a dipolarization under steady IMF conditions, (2) a dipolarization associated with a northward turning of the IMF, (3) an observed event under steady IMF conditions, and finally (4) an observed event associated with IMF northward turning. Our results show that (1) the northward turning of the IMF can enhance and prolong the dipolarization initiated by internal trigger, which is consistent with the statistical studies, and (2) the event simulations are similar to the observations. All these indicate that the northward turning of the IMF could play an important role in substorm triggering; however, it does not mean that it is necessary.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1527
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Z. Peng,C. Wang,北京8701信箱. Effect of the northward turning of the interplanetary magnetic field on the depolarization[J]. Journal of Geophysical Research: Space Physics,2013,118(12):7605-7610.
APA Z. Peng,C. Wang,&北京8701信箱.(2013).Effect of the northward turning of the interplanetary magnetic field on the depolarization.Journal of Geophysical Research: Space Physics,118(12),7605-7610.
MLA Z. Peng,et al."Effect of the northward turning of the interplanetary magnetic field on the depolarization".Journal of Geophysical Research: Space Physics 118.12(2013):7605-7610.
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